20260617 cleanup

multrusrequested to merge
20260617_cleanup into main

Cleanup, as agreed in https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/wikis/Meetings/Reports/2026-06-16%20Technical%20Matters

BE switches

  • FIX_BASOP_2620_ICBWE_GSMAPPING_DEAD_CLAMP - FhG: remove dead (always-overwritten) gsMapping clamp in ic_bwe_enc_gsMapping_fx; float ref has no clamp -> accept
  • FIX_BASOP_2626_RC_UNI_DEC_READ_BITS_HANG - FhG: BASOP #2626: rc_uni_dec_read_bits: replace loop counter tmp with UWord64; with UWord32 the division-substitute loop (tmp <= low) never terminates after the bit-error sentinel sets rc_low=0xFFFFFFFF -> decoder hang on corrupted bitstreams -> accept

NON-BE switches

  • FIX_BASOP_2612_RESET_DECIM_MEM - FhG: BASOP #2612 (closed): reset (zero) the 16k resampler memory of the secondary channel on DFT->TD stereo switch (otherwise -> fx overshoot) -> accept
  • FIX_BASOP_2621_STEREO_CNG_NOISY_SPEECH_QSHIFT - FhG: BASOP #2621 (closed): stereo_dft_generate_comfort_noise_fx flag_noisy_speech: compare (lp_speech-lp_noise) Q23 diff against 28.0 in Q23 (was vs integer 28 with q_lp_noise=0) -> accept
  • FIX_ISSUE_2618_PLC_RES_ATT_SCALING - FhG: BASOP #2618: residual PLC burst attenuation, apply divide/Sqrt32 exponent so fac tracks exponent correctly -> accept
  • NONBE_FIX2614_LP_CNG_ASSERT - FhG: -> accept
  • FIX_BASOP_1765_MASA1TC_CNG_MISMATCH - Nokia: BASOP issue 1765: Improve accuracy of FD CNG noise estimation -> accept

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